2004 Ford F150 Bi-fuel Supplement 2nd Printing - Page 21

Maintenance and care SERVICE RECOMMENDATIONS Before you service your Bi-fuel vehicle, read and understand all information found in the Maintenance and care chapter of your Owner's Guide and this supplement. Refer to your scheduled maintenance guide for service requirements and intervals. Do not modify the gaseous fuel injection system configuration or components. Do not replace the gaseous fuel injection system components with parts not designed for use with your Bi-fuel vehicle. Components designed for use in your CNG or LPG Bi-fuel vehicle consist of special materials and are calibrated especially for your vehicle. Failure to use the correct components may cause damage to the engine and fuel system or possible personal injury. Service to gaseous fuel injection system components must be conducted only at qualified dealerships by qualified service technicians. Failure to do so may cause damage to the engine and fuel system components or possible personal injury. Any modification to your Gaseous Fuel Injection System voids the Ford New Vehicle Limited Warranty. GASEOUS FUEL INJECTION SYSTEM SHUTOFF When in the gaseous fuel mode under normal operating procedures, the flow of CNG or LPG (depending upon application) is stopped when the ignition is turned to the OFF position. The electrically operated control valve(s) only allow the flow of fuel when the ignition is in the ON position, with the engine running. Liquefied petroleum gas (LPG) If equipped with the manually-actuated supply valve(s), the flow of LPG to the engine can be stopped by closing the supply valve located on the LPG fuel tank(s). If equipped, the manually-actuated supply valve(s) must be in the full OPEN position for the engine to run on LPG. Depending upon application, it may be necessary to remove an access panel to close or open the supply valve(s). 21